Display device, detection device, refresh rate detection method, and storage medium

Abstract

The present application provides a display device, a detection device, a refresh rate detection method, and a storage medium. The display device includes: a display screen; a wire, one end of which is electrically connected to the display screen; a first chip, which is electrically connected to the other end of the wire; and a first magnetic field detection device, which is disposed adjacent to the wire and is used to detect magnetic field intensity information caused by current passing through the wire; wherein the first chip is electrically connected to the first magnetic field detection device and is used to determine the refresh rate of the display screen based on the magnetic field intensity information detected by the first magnetic field detection device. Without changing the power supply circuit of the display device, the present application solves the voltage drop problem by disposing a magnetic field detection device adjacent to the wire to detect the corresponding magnetic field intensity information and determine the refresh rate of the display screen.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device, a detection device, a refresh rate detection method, and a storage medium. Background Art

[0002] With the continuous advancement of display technology, the demand for display refresh rates is also increasing. Existing methods for detecting display refresh rates involve adding a resistor to the display's power supply circuit, connecting the resistor in series with the power supply traces related to the refresh rate, and then determining the display's refresh rate by detecting the current waveform of the power supply traces. However, the series resistor changes the power supply circuit, and the current flowing through the resistor can cause a voltage drop. Summary of the Invention

[0003] The embodiments of the present application provide a display device, a detection device, a refresh rate detection method, and a storage medium, which solve the voltage drop problem.

[0004] In a first aspect, an embodiment of the present application provides a display device, including:

[0005] Display screen;

[0006] a wire, one end of which is electrically connected to the display screen;

[0007] a first chip electrically connected to the other end of the wire; and

[0008] a first magnetic field detection device, disposed adjacent to the conductive wire, and configured to detect magnetic field intensity information caused by current passing through the conductive wire;

[0009] The first chip is electrically connected to the first magnetic field detection device to determine the refresh rate of the display screen according to the magnetic field strength information detected by the first magnetic field detection device.

[0010] In a second aspect, an embodiment of the present application provides a detection device for detecting a display device, wherein the display device includes a display screen and a wire electrically connected to the display screen, and the detection device includes:

[0011] a first magnetic field detection device, disposed adjacent to the conductive wire, and configured to detect magnetic field intensity information caused by current passing through the conductive wire; and

[0012] A second chip is electrically connected to the first magnetic field detection device, and is used to determine the refresh rate of the display screen according to the magnetic field strength information detected by the first magnetic field detection device.

[0013] In a third aspect, an embodiment of the present application provides a refresh rate detection method, which is applied to a display device, wherein the display device includes a display screen and a wire electrically connected to the display screen. The method includes:

[0014] obtaining magnetic field strength information caused by the current passing through the conductor; and

[0015] A refresh rate of the display screen is determined according to the magnetic field strength information.

[0016] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is run on a computer, the computer is enabled to execute the refresh rate detection method as described in any one of the above items.

[0017] In the display device provided in an embodiment of the present application, when current flows through a wire electrically connected to a display screen, a magnetic field is generated around the wire. By setting a first magnetic field detection device at a position adjacent to the wire to detect the corresponding magnetic field strength information, and determining the refresh rate of the display screen based on the magnetic field strength information, the set first magnetic field detection device does not change the power supply circuit of the display device, thereby avoiding the voltage drop problem caused by the series resistor in the power supply circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the first structure of the display device provided in an embodiment of the present application.

[0020] Figure 2 It is a structural schematic diagram of the wire and the first magnetic field detection device provided in an embodiment of the present application.

[0021] Figure 3 Schematic diagram of the square wave of current in the conductor provided in the embodiment of the present application.

[0022] Figure 4 This is a second structural diagram of the display device provided in an embodiment of the present application.

[0023] Figure 5 It is a structural schematic diagram of the wire, the first magnetic field detection device and the second magnetic field detection device provided in an embodiment of the present application.

[0024] Figure 6 This is a schematic diagram of the first structure of the detection equipment provided in the embodiment of the present application.

[0025] Figure 7 This is a third structural diagram of the display device provided in an embodiment of the present application.

[0026] Figure 8 This is a second structural diagram of the detection equipment provided in the embodiment of the present application.

[0027] Figure 9 It is a flow chart of the refresh rate detection method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0029] In the prior art, an organic light-emitting diode (OLED) display includes a power supply circuit. The refresh rate of the display is detected by connecting a resistor in series with the power supply trace of the power supply circuit. Each time the OLED display is refreshed, the power supply trace is powered down, causing a surge in the current flowing through the trace, forming a current waveform in the trace. Based on this current waveform, the refresh rate of the display can be determined by the power supply trace's power-down frequency. The power supply traces are those related to the refresh rate, such as the VDDR trace that powers the chip and the AVDD trace that powers the analog circuit.

[0030] However, adding a resistor in series with the power supply line of the power supply circuit changes the power supply circuit, and even if the resistance of the resistor is very small, a voltage drop problem will occur.

[0031] In order to solve the problems existing in the prior art, the embodiments of the present application provide a display device, a detection device, a refresh rate detection method and a storage medium, thereby realizing the detection of the refresh rate of the display screen without changing the power supply circuit of the display device, thereby solving the voltage drop problem.

[0032] Optionally, the present application embodiment provides a display device, see Figure 1 , Figure 1 1 is a schematic diagram of a first structure of a display device provided in an embodiment of the present application. The display device 100 may be an OLED display device, etc. The display device 100 may include a display screen 101, a wire 102, a first chip 103, and a first magnetic field detection device 104.

[0033] Display screen 101 may be an OLED display screen; wire 102 may include a wire for powering first chip 103, such as a VDDR trace, with one end of wire 102 electrically connected to display screen 101; first chip 103 is electrically connected to the other end of wire 102; and first magnetic field detection device 104 is disposed adjacent to wire 102. First magnetic field detection device 104 is configured to detect magnetic field strength information caused by current flowing through wire 102. Specifically, when current flows through wire 102, a magnetic field is generated around wire 102. First magnetic field detection device 104 may be disposed at a location where it can detect the magnetic field, and the specific location is not limited herein. First chip 103 is electrically connected to first magnetic field detection device 104 to determine the refresh rate of display screen 101 based on the magnetic field strength information corresponding to wire 102 detected by first magnetic field detection device 104.

[0034] In the display device 100 provided in this embodiment, when current flows through the wire 102 electrically connected to the display screen 101, a magnetic field is generated around the wire 102. By setting a first magnetic field detection device 104 at a position adjacent to the wire 102 to detect the corresponding magnetic field strength information, the refresh rate of the display screen 101 is determined based on the magnetic field strength information. The set first magnetic field detection device 104 does not change the power supply circuit of the display device 100, thereby avoiding the voltage drop problem caused by the series resistor in the power supply circuit.

[0035] For details, please refer to Figure 1 Display screen 101 in display device 100 may be an OLED display, whose power supply circuit has a back voltage of approximately ±4.6V. One end of wire 102 is electrically connected to display screen 101. Wire 102 may be a wire related to the refresh rate of display screen 101, such as a VDDR line. The VDDR line voltage is approximately 1.5V. The VDDR line is a power supply line unique to OLED displays and does not exist on liquid crystal displays. Furthermore, the power supply circuit for display screen 101 may include other wires, such as an AVDD line for powering analog circuits, an AVCC line for powering analog circuits, a VCC line for powering digital circuits, and a VSS line for the common power supply of the digital circuits.

[0036] The first chip 103 is electrically connected to the other end of the wire 102. The wire 102 is used to power the first chip 103 and play the role of data reading and writing and display algorithm processing. The first chip 103 has a processing function and can be a processor.

[0037] A first magnetic field detection device 104 is disposed adjacent to the conductor 102 and is configured to detect magnetic field intensity information caused by the current passing through the conductor 102. The first magnetic field detection device 104 may be a Hall sensor, a geomagnetic sensor, a magnetoresistive sensor, an eddy current sensor, a magnetic liquid sensor, or the like. In this embodiment, the use of a high-precision Hall sensor improves magnetic field detection accuracy.

[0038] Specifically, when current flows through the wire 102, a magnetic field is generated around the wire 102. The first magnetic field detection device 104 needs to be positioned in a position capable of detecting the magnetic field. Figure 2 , Figure 2 1 is a schematic diagram of the structure of the conductor and the first magnetic field detection device provided in an embodiment of the present application. The first magnetic field detection device 104 can be positioned above the conductor 102. Alternatively, the first magnetic field detection device 104 can be positioned below or to the side of the conductor 102. The specific position can be determined based on the internal spatial layout of the display device.

[0039] The first magnetic field detection device 104 may or may not be in contact with the wire 102. If the first magnetic field detection device 104 is in contact with the wire 102, the first magnetic field detection device 104 may be attached to the surface of the wire 102, such as by adhesive, clamping through a retaining groove, or fixing with a fixing member. If the first magnetic field detection device 104 is not in contact with the wire 102, the first magnetic field detection device 104 may be fixed around the wire 102 by other components, and the specific fixing method is not specifically limited here.

[0040] It should be noted that when current flows through conductor 102, as a DC conductor, conductor 102 generates a magnetic field around it. According to the Biot-Savart law, the magnetic field intensity information B caused by the current passing through conductor 102, detected by first magnetic field detection device 104, is related to the current I passing through conductor 102 and the distance R between conductor 102 and first magnetic field detection device 104. The specific calculation formula is B = 0.2 * I / R. For example, when the distance R between conductor 102 and first magnetic field detection device 104 is 0.1 mm (millimeter) and the current flowing through conductor 102 is 140 mA (milliamperes), the corresponding magnetic field intensity information B of conductor 102 is 0.28 mT (millitesla).

[0041] The distance between the conductor 102 and the first magnetic field detection device 104 includes both contact and non-contact situations. It should be noted that the distance between the first magnetic field detection device 104 and the conductor 102 affects the detected magnetic field strength. Since magnetic field transmission in space generates consumption, the closer the distance between the magnetic field generated by the conductor 102 and the first magnetic field detection device 104 is, the lower the magnetic field consumption. In other words, the magnetic field strength detected when the conductor 102 and the first magnetic field detection device 104 are in contact with each other is greater than the magnetic field strength detected when the two are not in contact.

[0042] In addition, to prevent the wire 102 from contacting other power supply lines and causing a short circuit, the wire 102 is usually wrapped with an insulating layer, that is, the wire 102 may include a bare wire and an insulating layer, wherein the bare wire is the path through which the current flows. The first magnetic field detection device 104 may include a detector and a shell that carries the detector. To reduce the distance between the first magnetic field detection device 104 and the wire 102 and make the detected magnetic field strength information stronger, the detector can be attached to one side of the inner surface of the shell. Of course, the detector can also be set on one side of the shell and exposed to the outside. Here, if the detector is set in the center of the shell, the magnetic field strength information of the wire 102 may not be detected.

[0043] Specifically, the distance R between the conductor 102 and the first magnetic field detection device 104 is the distance between the bare wire of the conductor 102 and the detector of the first magnetic field detection device 104. Therefore, when the conductor 102 and the first magnetic field detection device 104 are in contact with each other, the distance between them includes three situations: First, the detector of the first magnetic field detection device 104 is exposed on one side of the housing and attached to the outer surface of the insulation layer of the conductor 102. In this case, the distance R is the thickness of the insulation layer; Second, the detector of the first magnetic field detection device 104 is located on the inner surface of the housing, the conductor 102 is provided with a slot in the insulation layer, and the housing on the side where the detector is located is attached to the surface of the bare wire. In this case, the distance R is the thickness of the housing; Third, the detector of the first magnetic field detection device 104 is located on the inner surface of the housing and attached to the insulation layer. In this case, the distance R is the sum of the thickness of the insulation layer and the thickness of the housing.

[0044] When the wire 102 and the first magnetic field detection device 104 are not in contact, the distance between them can include four situations according to the above-mentioned setting method: First, the distance R is the sum of the thickness of the insulation layer and the separation distance; Second, the distance R is the sum of the thickness of the shell and the separation distance; Third, the distance R is the sum of the thickness of the shell, the thickness of the insulation layer, and the separation distance; Fourth, the distance R is the separation distance. The separation distance is the gap distance between the wire 102 and the first magnetic field detection device 104 when they are not in contact.

[0045] See also Figure 3 , Figure 3 : This is a schematic diagram of the current square wave of the wire provided in the embodiment of the present application. Under normal working conditions, the current flowing through the wire 102 is a constant current of about 50mA. Every time the display screen 101 is refreshed, the wire 102 is powered, causing the current of the wire 102 to surge, with a current peak of about 140mA. Therefore, within the preset time period, the current flowing through the wire 102 will change continuously with the refresh rate of the display screen 101, forming a square wave as shown in FIG. Figure 3 The square wave diagram shown.

[0046] It should be noted that, unlike the power supply lines used in the prior art for detecting refresh rates, the conductor 102 in this embodiment is a VDDR line, and the AVDD line is not used. Since the peak current of the AVDD line after power is drawn is approximately 40mA when the display screen is refreshed, if the first magnetic field detection device 104 in this embodiment is used to detect the magnetic field strength information caused by the current passing through the AVDD line, if the distance between the two is 0.1mm and the current is 40mA, the magnetic field strength information corresponding to the AVDD line is calculated by the above formula to be 0.08mT. The magnetic field strength of the earth's magnetic field or the environmental magnetic field is approximately 0.06mT, and the magnetic field strengths of the two are close. The earth's magnetic field can easily interfere with the magnetic field corresponding to the AVDD line, affecting the refresh rate detection effect.

[0047] It is understood that the greater the current intensity, the stronger the magnetic field intensity generated, and the corresponding anti-interference capability is stronger. To improve the accuracy of refresh rate detection, in this embodiment, the first magnetic field detection device 104 can be a Hall effect sensor. The magnetic field intensity generated by the current intensity of 140±10mA is the optimal magnetic field intensity that the Hall effect sensor can detect. Therefore, the wire 102 used in this embodiment is the VDDR trace.

[0048] Optionally, the first chip 103 is electrically connected to the first magnetic field detection device 104 to determine the refresh rate of the display screen 101 based on the magnetic field strength information caused by the current passing through the conductor 102 detected by the first magnetic field detection device 104. The first magnetic field detection device 104 can obtain all magnetic field strength information corresponding to the conductor 102 at different time points within a preset time period. Specifically, when the conductor 102 is energized, multiple current strength information is generated at different time points within the preset time period. The above formula is used to calculate all magnetic field strength information corresponding to the conductor 102 within the preset time period using all current strength information within the preset time period and the distance between the conductor 102 and the first magnetic field detection device 104 as conditions. The preset time period can be 1 second, 2 seconds, 3 seconds, etc.

[0049] In some embodiments, after obtaining all magnetic field strength information corresponding to the wire 102 at different time points within a preset time period, the first chip 103 can be used to obtain a magnetic field strength curve based on all magnetic field strength information corresponding to the wire 102 at different time points, and determine the refresh rate of the display screen 101 based on the magnetic field strength curve.

[0050] For example, the first chip 103 can be electrically connected to the first magnetic field detection device 104 through at least two connecting wires, so as to obtain all magnetic field strength information through the at least two connecting wires, thereby obtaining a magnetic field strength curve corresponding to the wire 102 based on all magnetic field strength information; the refresh rate of the display screen 101 can be determined by a software algorithm based on the magnetic field strength curve. Among them, the at least two connecting wires can be two connecting wires, four connecting wires, or more connecting wires. When there are two connecting wires, it can be an I2C bus, and the I2C bus includes two connecting wires, a serial data line and a serial clock line; when there are four connecting wires, it can be an SPI bus, and the SPI bus includes an input data line, an output data line, a clock data line, and a chip select data line; when there are more connecting wires, it can be an I3C bus, and the I3C bus includes two upstream data lines and multiple downstream data lines. The I2C bus, the SPI bus, and the I3C bus can all be used to transmit digital signals between the first chip 103 and the first magnetic field detection device 104 through a universal standard protocol.

[0051] Optionally, all magnetic field strength information corresponding to wire 102 at different time points within a preset time period is converted into a digital signal, which is then transmitted to first chip 103 via at least two connecting wires. The digital signal includes all magnetic field strength information. After receiving the digital signal, first chip 103 processes the digital signal to obtain a magnetic field strength curve formed by all the magnetic field strength information, and finally calculates the refresh rate of display screen 101 using a software algorithm.

[0052] In some embodiments, first magnetic field detection device 104 can obtain all magnetic field strength information corresponding to conductor 102 at different time points within a preset time period, and obtain all interrupt signals triggered by all first target magnetic field strength information exceeding a preset magnetic field strength threshold within the total magnetic field strength information. First chip 103 can determine the refresh rate of display screen 101 based on the number of interrupt signals obtained within the preset time period.

[0053] For example, the first chip 103 can be electrically connected to the first magnetic field detection device 104 via a connecting wire. After obtaining all magnetic field strength information corresponding to the wire 102 at different time points within a preset time period, the first magnetic field detection device 104 can compare all magnetic field strength information with a preset magnetic field strength threshold to obtain all first target magnetic field strength information that exceeds the preset magnetic field strength threshold. Each acquisition of a first target magnetic field strength information triggers the first magnetic field detection device 104 to generate an interrupt signal, and multiple interrupt signals can be triggered within the preset time period. The first magnetic field detection device 104 transmits all interrupt signals to the first chip 103 via a connecting wire. The first chip 103 can determine the refresh rate of the display screen 101 based on the number of interrupt signals received within the preset time period.

[0054] Specifically, when the distance between the conductor 102 and the first magnetic field detection device 104 is 0.1 mm and the current of the conductor 102 is 140 mA, the calculated magnetic field strength information corresponding to the conductor 102 is 0.28 mT. Therefore, the preset magnetic field strength threshold can be set to be less than 0.28 mT, such as 0.25 mT. That is, each time the display screen 101 is refreshed, the conductor 102 is powered, and the current of the conductor 102 surges to a peak current of 140 mA, thereby generating a corresponding magnetic field strength information of 0.28 mT. This magnetic field strength information is greater than the preset magnetic field strength threshold, thereby triggering the generation of an interrupt signal, which is then transmitted to the first chip 103.

[0055] In some embodiments, the display screen 101 may include a display area, the display area being provided with an indicator, the indicator being used to display the real-time refresh rate of the display screen 101, wherein the indicator elements constituting the indicator may be numbers, text, etc., such as 60 Hz (hertz), sixty hertz, etc. The refresh rate of the display screen 101 may be detected in real time by using the magnetic field strength information caused by the current passing through the conductor 102 detected by the first magnetic field detection device 104. When a user uses the display device 100, the user may view the real-time refresh rate of the display screen 101 through the indicator in a specific display area of the user interface corresponding to the display screen 101. The user may adjust the refresh rate applicable to the current scenario according to the real-time refresh rate in different application scenarios, thereby achieving dynamic adjustment of the refresh rate and improving the user experience.

[0056] For example, when a user uses the display device 100 to play games, if the refresh rate is low, the game interface will become stuck. At this time, the refresh rate can be adjusted through the refresh rate adjustment software, and the refresh rate can be adjusted to a refresh rate suitable for the gaming environment through the real-time display refresh rate; for another example, when a user uses the display device 100 to watch the news, a higher refresh rate is not required. At this time, the refresh rate can be lowered according to the real-time display refresh rate, thereby reducing power consumption.

[0057] In addition, since the magnetic field strength information corresponding to the wire 102 detected by the first magnetic field detection device 104 includes the ambient magnetic field, the ambient magnetic field will interfere with the obtained magnetic field strength information corresponding to the wire 102, thereby affecting the detection result. To solve this problem, please refer to Figure 4 and Figure 5 , Figure 4 is a second structural diagram of the display device provided in an embodiment of the present application, Figure 5 FIG. 1 is a schematic diagram of the structure of the wire, the first magnetic field detection device, and the second magnetic field detection device provided in an embodiment of the present application.

[0058] The second magnetic field detection device 105 can be spaced apart from the conductor 102 and can be used to detect second magnetic field strength information corresponding to the ambient magnetic field. It should be noted that the second magnetic field detection device 105 must not detect the magnetic field strength information of the conductor 102, but only detect other ambient magnetic fields that interfere with the magnetic field generated by the conductor 102. In other words, the positional relationship between the second magnetic field detection device 105 and the conductor 102 can be set accordingly based on this condition and is not specifically limited herein.

[0059] Optionally, first magnetic field detection device 104 can be used to detect magnetic field strength information caused by the current passing through conductor 102. This magnetic field strength information includes magnetic field strength information corresponding to the magnetic field generated by conductor 102 and second magnetic field strength information corresponding to the ambient magnetic field. Therefore, first chip 103 is also electrically connected to second magnetic field detection device 105. First chip 103 can calculate the magnetic field strength information corresponding to conductor 102 without ambient magnetic field interference based on the magnetic field strength information and the second magnetic field strength information, and determine the refresh rate of display screen 101, thereby improving the accuracy of detecting the refresh rate of display screen 101.

[0060] Specifically, the magnetic field strength information and the second magnetic field strength information can be subtracted to obtain the second target magnetic field strength information. The refresh rate of the display screen is determined based on the second target magnetic field strength information. For example, if the magnetic field strength information is A and the second magnetic field strength information is B, the second target magnetic field strength information is AB.

[0061] As can be seen from the above, in the display device 100 provided in this embodiment, when current flows through the wire 102 electrically connected to the display screen 101, a magnetic field is generated around the wire 102. By disposing a first magnetic field detection device 104 adjacent to the wire 102 to detect the corresponding magnetic field strength information, the refresh rate of the display screen 101 is determined based on the magnetic field strength information. The provision of the first magnetic field detection device 104 does not change the power supply circuit of the display device 100, thereby avoiding the voltage drop problem caused by the series resistor in the power supply circuit. Furthermore, by disposing the second magnetic field detection device 105 at a distance from the wire 102, interference caused by the ambient magnetic field can be avoided, thereby improving the accuracy of the refresh rate detection.

[0062] In addition, by detecting the display screen 101 in real time and displaying the real-time refresh rate through the display screen 101, the refresh rate of the display screen 101 can be dynamically adjusted, thereby meeting the different scenario requirements of users using the display device 100 and improving the user experience.

[0063] Optionally, the present application also provides a detection device, see Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the first structure of the detection device provided in the embodiment of the present application. Figure 7 This is a schematic diagram of the third structure of a display device provided in an embodiment of the present application. The detection device 200 can be used to detect a display device 300, which can include a display screen 301, a wire 302, and a first chip 303. Display screen 301 can be an OLED display; wire 302 can be a VDDR trace, electrically connected to display screen 301; and first chip 303 is electrically connected to display screen 301 via wire 302. First chip 303 can be used to control the display screen 301.

[0064] The detection device 200 may include a first magnetic field detection device 201 and a second chip 202. The first magnetic field detection device 201 is arranged adjacent to the wire 302, and the first magnetic field detection device 201 is used to detect the magnetic field strength information caused by the wire 302; the second chip 202 is electrically connected to the first magnetic field detection device 201, so as to determine the refresh rate of the display screen 301 based on the magnetic field strength information corresponding to the wire 302 detected by the first magnetic field detection device 201.

[0065] The difference between the display device 100 provided in this embodiment and the previous embodiment is that the first magnetic field detection device 201 in the detection device 200 provided in this embodiment is arranged outside the display device 300 , while the display device 100 provided in the previous embodiment includes the first magnetic field detection device 104 .

[0066] In the detection device 200 provided in this embodiment, when current flows through the wire 302 electrically connected to the display screen 301, a magnetic field is generated around the wire 302. By setting a first magnetic field detection device 201 at a position adjacent to the wire 302 to detect the corresponding magnetic field strength information, the refresh rate of the display screen 301 is determined based on the magnetic field strength information. The set first magnetic field detection device 201 does not change the power supply circuit of the display device 300, thereby avoiding the voltage drop problem caused by the series resistor in the power supply circuit.

[0067] Specifically, during the production process of the display device 300, the refresh rate of the display device 300 can be tested by the detection device 200; or during the promotion or repair of the finished product of the display device 300, the device can be disassembled and the refresh rate of the display device 300 can be tested by the detection device 200.

[0068] Optionally, first magnetic field detection device 201 can be used to obtain all magnetic field strength information corresponding to conductor 302 at different time points within a preset time period. Specifically, when conductor 302 is energized, multiple current strength information is generated at different time points within the preset time period. The above formula is used to calculate all magnetic field strength information corresponding to conductor 302 within the preset time period, using all current strength information within the preset time period and the distance between conductor 302 and first magnetic field detection device 201 as conditions. The preset time period can be 1 second, 2 seconds, 3 seconds, etc.

[0069] In some embodiments, after obtaining all magnetic field strength information corresponding to the wire 302 at different time points within a preset time period, the second chip 202 can be used to obtain a magnetic field strength curve based on all magnetic field strength information corresponding to the wire 302 at different time points, and determine the refresh rate of the display screen 301 based on the magnetic field strength curve.

[0070] For example, the second chip 202 can be electrically connected to the first magnetic field detection device 201 via at least two connecting wires, so as to obtain all magnetic field intensity information via the at least two connecting wires, thereby obtaining a magnetic field intensity curve corresponding to the wire 302 based on all magnetic field intensity information; and the refresh rate of the display screen 301 can be determined using a software algorithm based on the magnetic field intensity curve. The at least two connecting wires can be two connecting wires, four connecting wires, or more connecting wires, an I2C bus, an SPI bus, or an I3C bus, etc.

[0071] Optionally, all magnetic field strength information corresponding to wire 302 at different time points within a preset time period is converted into a digital signal, which is then transmitted to second chip 202 via at least two connecting wires. The digital signal includes all magnetic field strength information. After receiving the digital signal, second chip 202 processes the digital signal to obtain a magnetic field strength curve formed by all the magnetic field strength information and uses a software algorithm to determine the refresh rate of display screen 301.

[0072] In some embodiments, first magnetic field detection device 201 can obtain all magnetic field strength information corresponding to conductor 302 at different time points within a preset time period, and obtain interrupt signals triggered by all first target magnetic field strength information exceeding a preset magnetic field strength threshold within the total magnetic field strength information. Second chip 202 can determine the refresh rate of display screen 301 based on the number of interrupt signals obtained within the preset time period.

[0073] For example, the second chip 202 can be electrically connected to the first magnetic field detection device 201 via a connecting wire. After obtaining all magnetic field strength information corresponding to the wire 302 at different time points within a preset time period, the first magnetic field detection device 201 can compare all magnetic field strength information with a preset magnetic field strength threshold to obtain all first target magnetic field strength information that exceeds the preset magnetic field strength threshold. Each acquisition of a first target magnetic field strength information triggers the first magnetic field detection device 201 to generate an interrupt signal, and multiple interrupt signals can be triggered within the preset time period. The first magnetic field detection device 201 transmits all interrupt signals to the second chip 202 via a connecting wire. The second chip 202 can determine the refresh rate of the display screen 301 based on the number of interrupt signals received within the preset time period.

[0074] Specifically, when the distance between the wire 302 and the first magnetic field detection device 201 is 0.1 mm and the current of the wire 302 is 140 mA, the calculated magnetic field strength information corresponding to the wire 302 is 0.28 mT. Therefore, the preset magnetic field strength threshold can be set to less than 0.28 mT, such as 0.25 mT. That is, each time the display screen 301 is refreshed, the wire 302 is powered, and the current of the wire 302 surges to a peak current of 140 mA, thereby generating a corresponding magnetic field strength information of 0.28 mT. This magnetic field strength information is greater than the preset magnetic field strength threshold, thereby triggering the generation of an interrupt signal, which is then transmitted to the second chip 202.

[0075] In some embodiments, the refresh rate of the display screen 301 can be detected in real time by using the magnetic field strength information caused by the current passing through the wire 302 detected by the first magnetic field detection device 201. For example, during the production process of the display device 300, production personnel can use the detection device 200 to monitor the refresh rate of the display device 300 in real time to determine whether the refresh rate of the display screen 301 always meets the set requirements during the monitoring process, thereby improving the qualification rate of the display device 300; for example, when repairing the display device 300, maintenance personnel can use the detection device 200 to perform real-time detection of the refresh rate of the display device 300, thereby improving the maintenance efficiency of the maintenance personnel; for another example, when selling a display device 300 product, if the user has doubts about the refresh rate of the display screen 301, the salesperson can disassemble the device and use the detection device 200 to perform real-time detection of the refresh rate of the display device 300, thereby improving the marketability and promotion of the display device 300 product.

[0076] In some embodiments, the display screen 301 may include a display area, the display area being provided with an indicator for displaying the real-time refresh rate of the display screen 301 , wherein the indicator elements constituting the indicator may be numbers, text, etc., such as 60 Hz (hertz), 60 Hz, etc. When repairing the display device 300 , maintenance personnel can use the real-time refresh rate displayed by the indicator on the display screen 301 to improve repair efficiency; when selling the display device 300 , sales personnel can use the real-time refresh rate displayed by the indicator on the display screen 301 to improve the marketability of the display device 300 .

[0077] In addition, since the magnetic field strength information corresponding to the wire 302 detected by the first magnetic field detection device 201 includes the ambient magnetic field, the ambient magnetic field will interfere with the obtained magnetic field strength information corresponding to the wire 302, thereby affecting the detection result. To solve this problem, the detection device 200 can also include a second magnetic field detection device 203. Figure 8 , Figure 8 This is a second structural diagram of the detection device provided in the embodiment of the present application. Figure 4 and Figure 7 In this embodiment, the first magnetic field detection device 201 and Figure 4 In the embodiment, the first magnetic field detection device 104 corresponds to the second magnetic field detection device 203, and the second magnetic field detection device 105 corresponds to the first magnetic field detection device 105. In this embodiment, the wire 302 of the display device 300 corresponds to the first magnetic field detection device 104. Figure 4 The wires 102 of the display device 100 correspond in this embodiment.

[0078] In some embodiments, during detection of the display device 300 by the detection device 200, the second magnetic field detection device 203 can be spaced apart from the conductive wire 302, and the second magnetic field detection device 203 can be used to detect second magnetic field strength information corresponding to the ambient magnetic field. It should be noted that the second magnetic field detection device 203 must ensure that it cannot detect the magnetic field strength information of the conductive wire 302, and only detects other ambient magnetic fields that interfere with the magnetic field generated by the conductive wire 302. In other words, the positional relationship between the second magnetic field detection device 203 and the conductive wire 302 can be set accordingly based on this condition, and is not specifically limited herein.

[0079] Optionally, first magnetic field detection device 201 can be used to detect magnetic field strength information caused by the current passing through conductor 302. This magnetic field strength information includes magnetic field strength information corresponding to the magnetic field generated by conductor 302 and magnetic field strength information corresponding to the ambient magnetic field. Therefore, second chip 202 is also electrically connected to second magnetic field detection device 203. Second chip 202 can calculate the magnetic field strength information corresponding to conductor 302 without ambient magnetic field interference based on the magnetic field strength information and the second magnetic field strength information, and determine the refresh rate of display screen 301, thereby improving the accuracy of detecting the refresh rate of display screen 301.

[0080] Specifically, the magnetic field strength information and the second magnetic field strength information can be subtracted to obtain the second target magnetic field strength information. The refresh rate of the display screen is determined based on the second target magnetic field strength information. For example, if the magnetic field strength information is A and the second magnetic field strength information is B, the second target magnetic field strength information is AB.

[0081] As can be seen from the above, the detection device 200 provided in this embodiment can perform real-time detection of the refresh rate of the display device 300. When current flows through the wire 302 electrically connected to the display screen 301, a magnetic field is generated around the wire 302. By setting a first magnetic field detection device 201 adjacent to the wire 302 to detect the corresponding magnetic field strength information, the refresh rate of the display screen 301 is determined based on the magnetic field strength information. The first magnetic field detection device 201 is an external device of the display device 300 and therefore does not change the power supply circuit of the display device 300, thereby avoiding the voltage drop problem caused by the series resistor in the power supply circuit. In addition, by setting the second magnetic field detection device 203 at a distance from the wire 302, interference caused by the ambient magnetic field can be avoided, thereby improving the accuracy of the refresh rate detection.

[0082] In addition, by performing refresh rate detection on the display device 300 through the detection device 200, the qualification rate of the display device 300 can be improved, the maintenance efficiency of the maintenance personnel can be improved, and the marketability of the product can be improved. Moreover, the detection device 200 is an external device and will not exist in the finished display device 300, thereby saving the internal space of the display device 300.

[0083] Accordingly, the present application also provides a refresh rate detection method, see Figure 9 , Figure 9 : is a flow chart of a refresh rate detection method provided in an embodiment of the present application. The refresh rate detection method is applied to a display device, such as the display device 100 in the above embodiment. The display device may include a display screen and a wire electrically connected to the display screen. The specific steps of the refresh rate detection method may be as follows:

[0084] S401: Obtain information on the magnetic field strength caused by the current passing through the conductor.

[0085] In this embodiment, when current flows through a conductor, a magnetic field is generated around the conductor. A first magnetic field detection device can be used to obtain information about the magnetic field strength caused by the current flowing through the conductor. The first magnetic field detection device can be positioned above the conductor, but can also be positioned below or to the side of the conductor. The specific location can be determined based on the internal spatial layout of the display device.

[0086] In some embodiments, all magnetic field strength information corresponding to the conductor at different time points within a preset time period can be obtained. Specifically, when the conductor is energized, multiple current strength information is generated at different time points within the preset time period. The above formula is used to calculate all magnetic field strength information corresponding to the conductor within the preset time period, using all current strength information within the preset time period and the distance between the conductor and the first magnetic field detection device as conditions. The preset time period can be 1 second, 2 seconds, 3 seconds, etc.

[0087] In some embodiments, all magnetic field strength information corresponding to the conductor at different time points within a preset time period can be obtained, and all interrupt signals triggered by all first magnetic field strength information exceeding a preset magnetic field strength threshold from all the magnetic field strength information can be obtained. Specifically, after obtaining all magnetic field strength information corresponding to the conductor at different time points within the preset time period, all the magnetic field strength information can be compared with the preset magnetic field strength threshold to obtain all first target magnetic field strength information exceeding the preset magnetic field strength threshold from all the magnetic field strength information. Each acquired first target magnetic field strength information triggers the first magnetic field detection device to generate an interrupt signal, and multiple interrupt signals can be triggered within the preset time period.

[0088] For example, when the distance between the wire and the first magnetic field detection device is 0.1 mm and the current in the wire is 140 mA, the calculated magnetic field strength information corresponding to the wire is 0.28 mT. Therefore, the preset magnetic field strength threshold can be set to less than 0.28 mT, such as 0.25 mT. That is, each time the display screen is refreshed, the wire is powered, and the current in the wire surges to a peak current of 140 mA, thereby generating a corresponding magnetic field strength information of 0.28 mT. This magnetic field strength information is greater than the preset magnetic field strength threshold, thereby triggering the generation of an interrupt signal.

[0089] S402: Determine a refresh rate of the display screen according to the magnetic field strength information.

[0090] In some embodiments, after obtaining all magnetic field strength information corresponding to the conductor at different time points within a preset time period, a magnetic field strength curve can be obtained based on all magnetic field strength information corresponding to the conductor at different time points; and the refresh rate of the display screen is determined by a software algorithm based on the magnetic field strength curve.

[0091] In some embodiments, after obtaining all magnetic field strength information corresponding to the wire at different time points within a preset time period, all interrupt signals triggered by all first target magnetic field strength information exceeding a preset magnetic field strength threshold in all magnetic field strength information are obtained, and the refresh rate of the display screen is determined based on the number of interrupt signals obtained within the preset time period.

[0092] This embodiment can detect the refresh rate of the display screen in real time through the magnetic field strength information caused by the current passing through the wire. When the user uses the display device, the user can view the refresh rate of the display screen in real time in a specific display area of the user interface corresponding to the display screen. The user can adjust the refresh rate applicable to the current scenario according to the real-time refresh rate in different application scenarios, thereby realizing dynamic adjustment of the refresh rate and improving the user experience.

[0093] For example, when a user uses a display device to play games, if the refresh rate is low, the game interface will become stuck. At this time, the refresh rate can be adjusted through the refresh rate adjustment software, and the refresh rate can be adjusted to a refresh rate suitable for the gaming environment through the real-time display refresh rate; for example, when a user uses a display device to watch the news, a higher refresh rate is not required. At this time, the refresh rate can be lowered according to the real-time display refresh rate, thereby reducing power consumption.

[0094] In addition, the ambient magnetic field can interfere with the acquired magnetic field strength information corresponding to the conductor, thereby affecting the refresh rate detection results. To solve this problem, a second magnetic field strength information corresponding to the ambient magnetic field can be obtained; the magnetic field strength information caused by the current passing through the conductor is subtracted from the second magnetic field strength information corresponding to the ambient magnetic field to obtain the second target magnetic field strength information; and the refresh rate of the display is determined based on the second target magnetic field strength information, thereby improving the accuracy of the refresh rate detection. For example, if the magnetic field strength information caused by the current passing through the conductor is A, and the second magnetic field strength information corresponding to the ambient magnetic field is B, then the second target magnetic field strength information is AB.

[0095] As can be seen from the above, this embodiment obtains information about the magnetic field strength caused by the current passing through the conductor and determines the refresh rate of the display screen based on this magnetic field strength information. This avoids the voltage drop caused by series resistance in the power supply circuit and can also prevent interference from the ambient magnetic field, thereby improving the accuracy of refresh rate detection. In addition, by detecting the display screen in real time and displaying the refresh rate on the screen, it can meet the different scenarios of users using the display device and improve the user experience.

[0096] Accordingly, an embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program runs on a computer, the computer executes the refresh rate detection method in any of the above embodiments.

[0097] For example, in some embodiments, when the above computer program is run on a computer, the computer performs the following steps:

[0098] Obtaining information on the strength of the magnetic field caused by the current passing through the conductor; and

[0099] The refresh rate of the display screen is determined based on the magnetic field strength information.

[0100] The specific implementation of the above operations can be found in the previous embodiments and will not be repeated here.

[0101] The storage medium may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0102] Since the instructions stored in the storage medium can execute the steps in any refresh rate detection method provided in the embodiments of the present application, the beneficial effects that can be achieved by any refresh rate detection method provided in the embodiments of the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0103] It should be noted that, for the refresh rate detection method of the embodiment of the present application, ordinary testers in this field can understand that all or part of the process of implementing the refresh rate detection method of the embodiment of the present application can be completed by controlling the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, such as in the memory of an electronic device, and executed by at least one processor in the electronic device. During the execution process, it may include the process of the embodiment of the refresh rate detection method.

[0104] In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts not described in detail in a particular embodiment, please refer to the relevant descriptions of other embodiments. In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features.

[0105] The above is a detailed introduction to the display device, detection device, refresh rate detection method, and storage medium provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core ideas of the present application. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A display device, characterized in that: include: Display screen; a wire, one end of which is electrically connected to the display screen; a first chip electrically connected to the other end of the wire; as well as a first magnetic field detection device, disposed adjacent to the conductive wire, and configured to detect magnetic field intensity information caused by current passing through the conductive wire; The first chip is electrically connected to the first magnetic field detection device to determine the refresh rate of the display screen according to the magnetic field strength information detected by the first magnetic field detection device.

2. The display device according to claim 1, wherein The first magnetic field detection device is used to obtain all magnetic field strength information corresponding to the wire at different time points within a preset time period; The first chip is used to obtain a magnetic field strength curve according to all magnetic field strength information corresponding to the wire at different time points, and determine the refresh rate of the display screen based on the magnetic field strength curve.

3. The display device according to claim 1, wherein The first magnetic field detection device is used to obtain all magnetic field strength information corresponding to the wire at different time points within a preset time period, and obtain all interrupt signals triggered by all first target magnetic field strength information exceeding a preset magnetic field strength threshold in all magnetic field strength information; The first chip is used to determine the refresh rate of the display screen according to the number of interruption signals obtained within a preset time period.

4. The display device according to claim 1, wherein The display device further includes a second magnetic field detection device, the second magnetic field detection device is spaced apart from the conductive wire, and the second magnetic field detection device is used to detect second magnetic field intensity information corresponding to the ambient magnetic field; The first chip is also electrically connected to the second magnetic field detection device, so as to determine the refresh rate of the display screen according to the magnetic field strength information and the second magnetic field strength information.

5. The display device according to claim 4, wherein: The first chip is further used for: Performing difference processing on the magnetic field strength information and the second magnetic field strength information to obtain second target magnetic field strength information; The refresh rate of the display screen is determined according to the second target magnetic field strength information.

6. The display device according to any one of claims 1 to 5, characterized in that: The display screen includes an organic light emitting diode display screen, the wire includes a VDDR wire for supplying power to the first chip, and the first magnetic field detection device includes a Hall sensor.

7. The display device according to any one of claims 1 to 5, characterized in that: The display screen includes a display area, and the display area is provided with an indicator, and the indicator is used to display the real-time refresh rate of the display screen.

8. A detection device, characterized in that: Used to detect a display device, the display device includes a display screen and a wire, the wire is electrically connected to the display screen, and the detection device includes: a first magnetic field detection device, disposed adjacent to the conductive wire, and configured to detect magnetic field intensity information caused by current passing through the conductive wire; and A second chip is electrically connected to the first magnetic field detection device, and is used to determine the refresh rate of the display screen according to the magnetic field strength information detected by the first magnetic field detection device.

9. The detection device according to claim 8, characterized in that The first magnetic field detection device is used to obtain all magnetic field strength information corresponding to the wire at different time points within a preset time period; The second chip is used to obtain a magnetic field strength curve according to all magnetic field strength information corresponding to the wire at different time points, and determine the refresh rate of the display screen based on the magnetic field strength curve.

10. The detection device according to claim 8, characterized in that The first magnetic field detection device is used to obtain all magnetic field strength information corresponding to the wire at different time points within a preset time period, and obtain all interrupt signals triggered by all first target magnetic field strength information exceeding a preset magnetic field strength threshold in all magnetic field strength information; The second chip is used to determine the refresh rate of the display screen according to the number of interruption signals obtained within a preset time period.

11. The detection device according to claim 8, characterized in that The detection device further includes a second magnetic field detection device, the second magnetic field detection device is spaced apart from the conductor, and the second magnetic field detection device is used to detect second magnetic field intensity information corresponding to the ambient magnetic field; The second chip is also electrically connected to the second magnetic field detection device, so as to determine the refresh rate of the display screen according to the magnetic field strength information and the second magnetic field strength information.

12. The detection device according to claim 11, characterized in that The second chip is further used for: Performing difference processing on the magnetic field strength information and the second magnetic field strength information to obtain second target magnetic field strength information; The refresh rate of the display screen is determined according to the second target magnetic field strength information.

13. The detection device according to any one of claims 8 to 12, characterized in that: The display screen includes an organic light emitting diode display screen, the wire is a VDDR line, and the first magnetic field detection device includes a Hall sensor.

14. The detection device according to any one of claims 8 to 12, characterized in that: The display screen includes a display area, and the display area is provided with an indicator, and the indicator is used to display the real-time refresh rate of the display screen.

15. A refresh rate detection method, characterized in that: Applied to a display device, the display device includes a display screen and a wire electrically connected to the display screen, the method includes: obtaining magnetic field strength information caused by the current passing through the conductor; and A refresh rate of the display screen is determined according to the magnetic field strength information.

16. The refresh rate detection method according to claim 15, characterized in that: The obtaining of the magnetic field strength information caused by the current passing through the conductor includes: obtaining all magnetic field strength information corresponding to the conductor at different time points within a preset time period; Determining the refresh rate of the display screen according to the magnetic field strength information includes: obtaining a magnetic field strength curve according to all magnetic field strength information corresponding to the wire at different time points; and determining the refresh rate of the display screen based on the magnetic field strength curve.

17. The refresh rate detection method according to claim 15, wherein: The obtaining of magnetic field strength information caused by the current passing through the conductor includes: obtaining all magnetic field strength information corresponding to the conductor at different time points within a preset time period, and obtaining all interrupt signals triggered by all first target magnetic field strength information exceeding a preset magnetic field strength threshold in all magnetic field strength information; Determining the refresh rate of the display screen according to the magnetic field strength information includes: determining the refresh rate of the display screen according to the number of interruption signals obtained within a preset time period.

18. The refresh rate detection method according to claim 15, wherein: The method further comprises: Obtaining second magnetic field strength information corresponding to the ambient magnetic field; Performing difference processing on the magnetic field strength information and the second magnetic field strength information to obtain second target magnetic field strength information; The refresh rate of the display screen is determined according to the second target magnetic field strength information.

19. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is run on a computer, the computer is enabled to execute the refresh rate detection method according to any one of claims 15 to 18.

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